Rollout On Knees muscles:Deltoids, Rectus Abdominis, Lower Back auxiliary muscles:Latissimus Dorsi, Trapezius, Obliques, Pectoralis Major, Quadriceps, Serratus Anterior, Teres Muscles required:Dumbbells (2) / Barbell / EZ Bar optional:Fitness Mat fitness level:Hard exercise type:Strength exercise benefits and how to do Rollout On Knees